|Publication number||US7407573 B2|
|Application number||US 11/014,985|
|Publication date||Aug 5, 2008|
|Filing date||Dec 20, 2004|
|Priority date||Dec 20, 2004|
|Also published as||US20060131221|
|Publication number||014985, 11014985, US 7407573 B2, US 7407573B2, US-B2-7407573, US7407573 B2, US7407573B2|
|Original Assignee||Chieh-Jung Lai|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Classifications (15), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
(a) Field of the Invention
The present invention relates to a water purifier that is able to provide a relatively large quantity of water, eliminates need to replace filter cores, and which is able to reduce contaminant emission quantity within waste water, and more particularly to a quick countercurrent water purifier that is still able to output a quantity of purified water when reverse washing, and which is applicable for application in industrial locations where large quantities of purified water are needed.
(b) Description of the Prior Art
A simplest conventional filter utilizes interstices in filter material of the filter, whereby raw water is fed into a top portion of the filter material, which then flows down through the filter under gravity, and suspended particles (contaminants) carried by the raw water are caused to be trapped in the interstices of the filter material. An outlet is configured in a bottom of the filter material for purified water to flow out therefrom, thus enabling achieving primary filtration water purification of the contaminated raw water. However, after using the filter material for a period of time, because of the interstices of the filter material becoming filled with the particles from the raw water, thus, the filter material will no longer be able to intercept the contaminants, and sand and dust particles carried by the raw water will remain in the water, thus making it necessary to replace the filter material at regular intervals in order for the purified water obtained after filtering to conform to industrial emission standards.
Referring to Taiwan patent No. 478381, entitled “Countercurrent-type Water Purifier”, which, though already improves upon a conventional filter in reverse washing, however, filtering process of the purifier stops when reverse washing, and, thus, has a shortcoming of inability to output purified water during reverse washing. Hence, the countercurrent-type wash water purifier of the cited patent is only suitable for use in households or business usage where water needs are relatively small, and is not suitable for providing sufficient water for industrial usage where quantity of water used is relatively large, thus, such a configuration is extremely nonideal.
A primary objective of the present invention is to provide a quick countercurrent-type water purifier that can supply a relatively large quantity of water for industrial usage.
In order to achieve the aforementioned objective, the quick countercurrent-type water purifier of the present invention is configured with two filters, two motors, a control circuit, a purified water storage tank and a waste water tank, which function in coordination with a particular arrangement of piping and disposition of a number of electromagnetic valves. Raw water is fed into the purifier and undergoes filtering by passing through the two filters that filter out sand and dust particles and other contaminants from the raw water. After a period of time and when one of the two filters becomes excessively contaminated, the purifier automatically detects such and actuates the electromagnetic valves to alter direction of flow through the piping, and the second motor actuates reverse washing of contaminants of the filter. Upon completing the reverse washing, the filter resumes normal water filtering functionality. The two filters can function in reciprocity, which thereby eliminates replacing filter material, and, upon one of the two filters undergoing reverse washing, not only is purified water yield not effected, moreover, a reserve store of purified water can be used to accelerate reverse washing and reduce water yield of the filter, which thereby achieves quick reverse washing for providing large quantities of water for industrial usage.
To enable a further understanding of the said objectives and the technological methods of the invention herein, the brief description of the drawings below is followed by the detailed description of the preferred embodiments.
Wherein the two normally open electromagnetic valves (12(A), 13(B)) and the two normally closed electromagnetic valves (14(A1), 15(B1)) configured in the branch pipes beneath the two filters (10, 10 a) can certainly be replaced with single three-way control valves (not shown in the drawings) as commonly used in conventional art.
After reverse washing and cleaning of the filter 10 a (taking approximately 5˜8 seconds), the control circuit 30 immediately switches back the electromagnetic valve 22(D1) and the electromagnetic valve 13(B) to the normally open state, thereby reestablishing flow of water through the two side branches of the raw water inlet pipe 11, and the purified water again flows into the purified water outlet pipe 23, thus returning to normal filtering operations of
Furthermore, referring to
In addition, the waste water emission pipe 16 is connected to the waste water tank 43, and a contaminated emission control valve 45 is configured in a bottom of the waste water tank 43, moreover, an overflow pipe 46 is configured in a top portion of the waste water tank 43. A ballcock 47 is configured at an inlet of the overflow pipe 46, and, moreover, the overflow pipe 46 connects to the raw water inlet pipe 11. Sedimentation of particle contaminants in the waste water released into the waste water tank 43 is discharged from the contaminated emission control valve 45. Furthermore, the filter material chamber 44 is configured rear of the purified water storage tank 42, and interior of the filter material chamber 44 is filled with adsorption material. The filtered purified water thus undergoes an absorption process by further passing through the absorption material, and metallic elements that are difficult to filter out are thereby adsorbed, which ensures output of purified water of superior quality. The waste water from the reverse washing is generally directly discharged, and total emission measure is considerable. Thus, by accumulating the waste water in the waste water tank 43, and after allowing for a period of time of sedimentation, the contaminated sedimentation contained in the waste water is discharged by opening of the contaminated emission control valve 45 controlled by the control circuit 30, and stays open until a discharge time set in the single chip 31 is reached, whereupon the contaminated emission control valve 45 is closed. Furthermore, the contaminated emission control valve 45 can be manually opened to discharge the contaminated sedimentation. When height level of the waste water that has undergone sedimentation goes above height of the ballcock 47, the ballcock 47 automatically opens an inlet of the overflow pipe 46, which thereby allows the waste water that has undergone sedimentation to again mix with the raw water, and to reenter the filtering process, thus achieving effectiveness of reducing amount of the waste water.
According to the aforementioned description of structural characteristics, assembly configuration and practical implementation method of the present invention, structural configurational characteristics of the present invention can be easily seen to have the following advantages:
1. Under normal conditions, the purified water that has undergone filtering is stored in the purified water storage tank 42, and, upon proceeding with reverse washing of the filters (10, 10 a), an abundant quantity of purified water can still be provided to a user.
2. Adopts a countercurrent mode, whereby need to replace the cotton filters is eliminated.
3. Effectuates reutilization of the waste water, which thereby substantially reduces amount of the waste water.
4. The filter material chamber 44 filled with the absorption material is further configured at the purified water outlet of the purified water storage tank 42, wherewith metallic elements are absorbed from the filtered purified water, and which thereby achieves effectiveness of providing purified water of superior quality.
It is of course to be understood that the embodiments described herein is merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3505037 *||Apr 12, 1968||Apr 7, 1970||English Electric Co Ltd||Hypereutectic silicon alloys|
|US4478714 *||Jan 10, 1983||Oct 23, 1984||Ciba-Geigy Ag||Pressurized filtration system|
|US6120688 *||Feb 9, 1998||Sep 19, 2000||Zenon Environmental, Inc.||Portable reverse osmosis unit for producing drinking water|
|U.S. Classification||210/143, 210/341, 210/253, 210/333.1|
|Cooperative Classification||B01D35/12, B01D24/4631, C02F1/008, C02F1/004, C02F2209/40, B01D37/04|
|European Classification||C02F1/00D6, B01D35/12, B01D37/04, B01D24/46D|
|Sep 24, 2011||FPAY||Fee payment|
Year of fee payment: 4
|Mar 18, 2016||REMI||Maintenance fee reminder mailed|
|Aug 5, 2016||LAPS||Lapse for failure to pay maintenance fees|
|Sep 27, 2016||FP||Expired due to failure to pay maintenance fee|
Effective date: 20160805